Solving Minor Problems; Audio Problems; Power Problems - Compaq Presario 305 Maintenance And Service Manual

Before You Begin
Removal Sequence
Product Description

Solving Minor Problems

Some minor problems and possible solutions are outlined in the following tables. If the problem appears related to a
software application, check the documentation provided with the software.
Audio
Display
PC card
USB
Problem
Computer does not beep after the
Power-On Self-Test (POST).
Internal speaker does not produce
sound when an external audio
source is connected to the stereo
line-jack.
External microphone does not work. Using the wrong type of microphone or microphone
No sound from headphones
Volume too low or too loud.
Battery Pack and Battery Gauge Problems (see also
Problem
Computer won't turn on
when battery pack is
inserted and power cord
is unplugged.
Computer is beeping
and battery power light
is blinking.
Computer battery
charge light blinks to
indicate low battery
condition, but computer
does not beep.
Battery charge does not
last very long.
Date and time must be
set every time computer
is turned on.
Battery pack is warm
after charging.
Battery pack will not
charge.
Computer shut down
and memory was lost
when replacing the
battery pack.
Battery gauge seems
inaccurate.
Problem
Drive cannot read a disc. Disc is not properly seated in the drive. Open loading tray, insert the disc, then
CD-ROM drive or DVD-
ROM drive is not detected
by the computer.
Problem Probable Cause
Drive cannot Diskette is write-protected.
write to a
diskette.
Writing to the wrong drive.
Not enough space is left
on the diskette.
Drive error has occurred.
Diskette is not formatted.
Drive is disabled.
Disable diskette write ability is
turned on.
Diskette drive
Wrong type of diskette is
cannot read a being used.
diskette.
Diskette has a bad sector.
Drive error has occurred.
Diskette is not formatted.
System cannot A bootable diskette is not in
start up from the drive.
diskette or
SuperDisk LS-
120 drive.
Diskette bootability is
disabled in Computer Setup.
Battery pack
Hard drive
Power
Modem
Probable Cause
System beeps have been turned down.
Volume may be turned off or set too low.
Line input may not be connected properly.
Headphones or speakers are connected to the
stereo speaker/headphone jack, which disables the
internal speakers.
Volume may be muted.
plug for the computer.
The microphone may not be connected properly.
Sound source not selected.
Audio settings are not set correctly.
Volume control on the computer is turned down.
Volume or mixing controls set incorrectly.
Sound source not selected.
The headphones are connected to the wrong jack.
Volume or mixing controls set incorrectly.
Probable Cause
Battery pack is discharged.
Battery connectors may be bent
or broken.
Battery pack charge is low.
Volume is turned down too low.
Battery is exposed to high
temperatures.
Battery pack was exposed to
extremely cold temperatures.
Battery conservation is disabled or
set to drain.
An external device is draining the
battery.
Battery gauge may be inaccurate
and require recalibration.
Real Time Clock (RTC) battery is
has reached the end of its useful
life.
Normal warming occurs during
charging.
Battery pack was exposed to
temperature extremes.
Battery pack is already charged.
Battery pack has exceeded its
useful life cycle.
Hibernation was not initiated
before removing the battery pack.
The battery pack may need
calibration.
The battery pack has reached the
end of its useful life.
CD/DVD Drive Problems
Probable Cause
Disc loaded in the loading tray upside
down.
Disc has a scratch on its surface.
Drive is not properly connected.
Diskette and Diskette Drive Problems
Presario 305 Model
Specifications
Troubleshooting
Pin Assignments
Battery gauge
Hardware
installation
Printer

Audio Problems

Solution(s)
1. Connect the computer to an external power
source and charge the battery pack.
2. Replace the battery pack with a fully charged
battery pack.
Check the battery connectors on the system
board to verify they are evenly spaced and that
they are not bent or broken.
Immediately save any open file(s). Then either:
Connect the computer to an external
power source to charge the battery pack.
Replace the battery pack with another
fully charged battery.
Turn off the computer or initiate
Hibernation until another power source or
fully charged battery pack is available.
Turn up the volume by using the Fn+F5
hotkeys.
Put the computer in a cooler place and
recharge the battery pack.
Put the computer in a warmer place and
recharge the battery pack.
Keep the battery pack within the recommended
temperature ranges:
Operating: 50° F to 104° F (10° C to 40° C)
Storage: 32° F to 86° F (0° C to 30° C )
Reset the battery conservation level.
Turn off or remove any external device or PC
Cards when not in use.
Recalibrate the gauge.
Restore power, then turn on the computer with
the power switch.
Contact your Compaq authorized service
provider to replace the RTC battery.
No action is required.
Allow time for the battery pack to return to room
temperature.
Keep the battery pack within the recommended
temperature ranges:
Operating: 50° F to 104° F (10° C to 40° C)
Storage: 32° F to 86° F (0° C to 30° C )
Recharge the battery pack.
No action required.
Use a different battery pack.
Work is lost.
Recalibrate the battery.
Replace the battery pack.
Solution(s)
close the tray.
Open the loading tray, turn over the
disc (label facing up), then close the
tray.
Insert a different disc.
If you are running a version of
Windows that was pre-installed by
Compaq, remove the drive from the
MultiBay and reinsert it.
If you are running a version of
Windows that was not pre-installed by
Compaq, turn the computer off. Then
remove the drive from the MultiBay
and reinsert it.
Solution(s)
Disable the write-protect feature or
use a diskette that is not write-
protected.
Check the drive letter in the path
statement.
Save the information to another
diskette.
Run Computer Checkup from the
Compaq Diagnostics diskette.
Format the diskette:
If you are using Windows 98:
1. From the Windows desktop,
select My Computer.
2. Select 3.5-in Floppy (A).
3. Select File, then Format.
4. Fill in the appropriate
information, then select Start.
Enable the proper drive through
Device Manager.
Run Computer Setup. Select the
Storage icon. Make sure Disable
diskette write ability is not checked.
Use the type of diskette required by
the drive.
Copy files to hard drive or another
diskette. Reformat bad diskette.
Run Computer Checkup from the
Compaq Diagnostics diskette.
Format the diskette:
If you are using Windows 98:
1. From the Windows desktop,
select My Computer.
2. Select 3.5-in Floppy (A).
3. Select File, then Format.
4. Fill in the appropriate
information, then select Start.
Verify that a diskette with the
necessary system files is in the
drive.
Enable diskette bootability in
Computer Setup, Security menu.
Parts Catalog
Battery Operations
Index
CD/DVD drive
Keyboard
Touchpad/pointing
device
Solution(s)
Use the Fn+F5 hotkeys to turn
up the system volume.
1. Adjust the overall volume by
pressing Fn+F5 hotkeys.
2. Adjusting the sliding mixer
controls by double-clicking the
speaker icon on the Windows
taskbar.
Check line input connection.
Disconnect the headphones or
speakers to enable the internal
speakers.
Uncheck the mute box in the
volume properties.
Check to see if you are using a
monophonic electret condenser
microphone with a 3.5 mm
plug.
Ensure that the microphone
plug is properly connected to
the mono microphone jack.
Ensure that the microphone is
selected as the recording
source in Control Panel,
Multimedia and the recording
level is adjusted.
Check the audio settings for
game programs.
Adjust the computer volume
with the Fn+F5 hotkeys.
1. Adjust the overall volume
with the Fn+F5 hotkeys.
2. Use the mixing features
available by double-clicking the
speaker icon on the Windows
taskbar.
Verify that the sound source is
selected in Control Panel,
Multimedia.
Check the connection.
1. Adjust the overall volume
with the Fn+F5 hotkeys.
2. Check the mixing features
available by double-clicking the
speaker icon on the Windows
taskbar.
Power Problems)
Diskette/diskette
drive
Memory
Infrared